Cutting-machine



w. c. BUCKNAM.

CUTTING MACHINE.

APPLICATION FILED JAN.23, I920.

1,365,021. I Patented Jan. 11,1921.

: 4 SHEETS-SHEET 1.

MTG/M1578 W. C. BUCKNAM. .CUTTING MACHINE.

APPLICATION FILED JAN.23, I920.

Patented Jan. 11, 1921.

4 SHEETSSHEET 2 r TR git 5N0 ATTORNEY MHWIMM.

CUTTING MACHINE.

APPLICATION FILED JAN.23, 1920'- 1,365,021. Patentd Jan. 11,1921.

4 SHEETS-SHEET 3.

W. C. BUCKNAM. CUTTING MACHINE.

APPLICATION FILED mus. 1920.

' Patented Jan. 11,1921.

4 SHEETSSHEET 4. r

HUME/V701? ATTORNEY .ferent shapes and sizes UNITED ii.

OFFICE.

WORTHY C. BUCKNAIVI, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO DAVIS- BOURNONVILLE OOMPANY, OF NEW YORK, N. Y-, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

CUTTING-MACHINE.

Patented Jan. 11, 1921.

T 0 all whom it may concern:

Be it known that I, Wonrrrr C.- Boon- NAM, a citizen. of the United States, and resident of Jersey City, in the county of Hudson and State of New Jersey, have invented aanew and useful Cutting-Machine, of which the following is a specification.

The invention relates to apparatus for cuttingsheets, plates and the like by means of the oxygen jet accompanied by an oxyacetylene, oxyhydric or equivalent heat ng flame, as embodied in familiar cuttmg torches. The machine disclosed herein embodies the invention of my prior. Patents 1,059,329 of April 15, 1913 and 1,324,005 and 1,324,007 of December 2, 1919. The object is to provide a machine for cutting automatioally by aid ofa templet on the order of the one shown in Patent 1,324,007,

but capable of a greater variety and range of work. The machine now devised is capable, for example, of cutting out a boiler head or other large piece of circular or other outline, and of cutting there1n all the openings that may be required of dltand in diiferent locations radially and circumferentlally.

In the accompanying drawings forming a art hereof:

igure 1 is a side elevation of the machine with portions broken away and in section;

Fig. 2 is a top plan with a portion of the templet ring and templet broken out;

Fig. 3 is a front end elevation with the arm and a part of the templet and templet rin in vertical section;

Fig. 4 is a plan view illustrating the use of a straight templet; and

Fig. 5 is another plan showing a templet which encircles the pivotal axis.

The machine has a base 1 adapted to rest either uponthe work or at one side of it, and a pivot st' 2 risin from the base.

The hubportion 3 of a rigid radial arm 4 is mounted rotatably upon suitable bearings upon the 0st, so that the arm'can swing entirely a out the center. Said arm is formed with upper and lower tracks '5 engaged by rollers 6 of a carriage 7, which is thus movable without restraint lon itudinally of the arm. A downwardly directed cutting torch 8 is'adjustably mounted upon the lower part of the carriage, below and at one side of the radial arm 4. Directly over the torch and above the radial arm, on the upper part of 'the carriage, is a vertical axis feed roller 9 adapted to cooperate with the inner or outer boundaries of a variety of templets. This feed roller or tracer is preferably magnetized in the manner disclosed in my Patent 1,324,007 aforesaid, so as to adhere to the templet. The coil for energizing the roller is housed in the casing 10. This roller is driven by an electric motor 11 onthe carriage through 3, are held removably in an annular holder .17 detachably secured by screws 18 to the head 14, by which it is supported in overhanging relation above the arm and carriage. Numerous templets, having difierent sizes and shapes of opening, can be placed interchangeabl in the holder, and larger or smaller holders may be provided for different ranges of templets. If desired, templets can be arranged tobe bolted to corner openings 19 in the head. The torch can be caused to out along straight linesby substituting a straight-edge temlet 16 for the holder 17, as seen in Fig. 4. xternal templets, such as the templet 16 of Fig. 5, can be supported on the post with their peripheries extendin in a circuit around. the pivotal axis. hus organized, the machine will cut entirely around the center. A number of different sizes and shapes of such templates can be supported upon a circular head 14, which takes the place of the removable head 14 of the other views.-

The templets may be provided with a switch piece 20 for starting the cut in the nternal templets,- such as the one designated 16 in Figs. 1 to portion of the metal which would be may be used in connection with the base to wardly directed cutting torch v carried by cooperate with holes in the Work for locatthe carriage below the arm .whereon the 10 ing the cut. 1 "carriage moves, mechanical driving means What I claim as new is: terminating in a vertical axis feed roller on A gas-cutting machine comprising the the carriage above the arm, and means for combination of a pivot post, a rigid radial supporting a variety of templets over the guide arm swung thereon, a carriage movarm for cooperation With said roller. able freely in and out on said arm, a doWn- WORTHY C. BUCKNAM. 

